A compact grating hollow encoder

Abstract

This utility model discloses a compact grating hollow encoder, comprising a base; a rotating cap rotatably connected to the base; a cavity formed by a downward-facing recess on the upper surface of the rotating cap, within which a grating disk is formed, with multiple evenly spaced light-transmitting holes on the side of the grating disk; a circuit board bracket supported in the cavity of the rotating cap and fixedly connected to the base; a circuit board; multiple LEDs on the upper surface of the circuit board; a light emitter and a light receiver respectively disposed on opposite sides of the grating disk; a digital tube bracket supported on the upper end of the circuit board, with multiple display holes facing the LEDs; and a light-transmitting lens disposed on the upper surface of the digital tube bracket and fixedly connected to the circuit board bracket. This utility model has a simple and compact structure.

Description

Technical Field

[0001] This utility model relates to a hollow encoder, and more precisely, a compact grating hollow encoder. Background Technology

[0002] Hollow encoders are widely used in products such as knobs. Existing hollow encoders use mechanical metal brushes for signal output. During the rotation of the knob or similar product, the mechanical metal brushes output corresponding signals to achieve control. However, the existing solution using mechanical metal brushes not only results in a complex structure and assembly process, leading to high costs, but also suffers from wear and tear during use, resulting in a short lifespan. To address the problems of mechanical metal brushes, a new type of hollow encoder has emerged. This new encoder uses a light transmitter, a light receiver, and a rotating grating disk to replace the existing mechanical metal brushes for signal output. Because the signal conversion is achieved using a light transmitter and receiver, the mechanical wear of the mechanical metal brushes is eliminated, resulting in a longer lifespan compared to hollow encoders using mechanical metal brushes. However, the existing hollow encoders still have a relatively complex structure. Utility Model Content

[0003] To address the technical problem of complex structures in existing hollow encoders, this invention provides a compact grating hollow encoder.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is to design a compact grating hollow encoder, including a base, and the compact grating hollow encoder further includes:

[0005] A rotating cap is rotatably connected to the base; the upper surface of the rotating cap is recessed downward to form a receiving cavity, and a grating disk is formed in the receiving cavity of the rotating cap; a plurality of light-transmitting holes are provided on the side of the grating disk at uniform intervals.

[0006] A circuit board support is provided, which is supported in the cavity of the rotating cap and fixedly connected to the base;

[0007] A circuit board, which is supported on the circuit board bracket; the upper surface of the circuit board is provided with multiple LEDs;

[0008] A light emitter, which is fixed to the circuit board and located below the circuit board;

[0009] A light receiver is fixed on the circuit board and located below the circuit board; the light receiver is positioned opposite the light emitter; the light emitter and the light receiver are respectively located on opposite sides of the grating disk; the rotating cap rotates, causing the grating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted through the light-transmitting hole and sends a control signal accordingly;

[0010] A digital tube bracket is provided on the upper end of the circuit board, and the digital tube bracket is provided with a plurality of display holes facing the LEDs;

[0011] A light-transmitting mirror is disposed on the upper surface of the digital tube bracket and is fixedly connected to the circuit board bracket.

[0012] The digital tube bracket is also provided with button holes; the compact grating hollow encoder also includes:

[0013] A button, which is inserted into the button hole and electrically connected to the circuit board.

[0014] The upper surface of the digital tube bracket is provided with an upwardly protruding button part, and the button hole is provided on the button part and penetrates the button part in the vertical direction;

[0015] The light-transmitting mirror is provided with a light-transmitting mirror hole, which is fitted onto the outer surface of the button part.

[0016] The compact grating hollow encoder also includes:

[0017] A diffusion film is disposed between the digital tube support and the light-transmitting lens.

[0018] The rotating cap has a central insertion hole, and the circuit board support has a downwardly extending insertion post that is inserted into the insertion hole. The base has a base fixing hole, and the insertion post has a support screw hole that is directly opposite the base fixing hole. The insertion post is supported on the base, and a screw passes through the base fixing hole and is threadedly connected to the support screw hole to fix the circuit board support to the base.

[0019] The upper surface of the circuit board bracket is recessed downward to form a bracket cavity. The upper surface of the circuit board bracket is provided with a fixed step that is recessed downward. The circuit board and the digital tube bracket are disposed in the bracket cavity, and the light-transmitting lens is attached and fixed to the fixed step.

[0020] The circuit board is provided with a circuit board positioning hole, the circuit board bracket is provided with an upper positioning post, and the digital tube bracket is provided with a bracket positioning hole. The upper positioning post is inserted into the circuit board positioning hole and the bracket positioning hole.

[0021] The rotating cap has a supporting surface in the receiving cavity, and the rotating cap has an annular receiving groove recessed downward around the grating disk on the supporting surface; the grating disk is formed on the side wall of the insertion hole;

[0022] The circuit board support includes a support bottom surface, which is located above the support surface; the support bottom surface is provided with a light emitter hole and a light receiver hole, and the light emitter and light receiver pass through the light emitter hole and the light receiver hole respectively and are inserted into the receiving slot and the socket respectively, or are inserted into the socket and the receiving slot respectively.

[0023] The base is also provided with a base positioning hole, a base wire passage hole, a base positioning post and a base fixing part. The lower surface of the circuit board bracket is provided with a lower positioning post, and the bottom surface of the bracket is provided with a bracket wire passage hole. The bracket wire passage hole communicates with the insertion hole and the base wire passage hole. The lower positioning post is inserted into the base positioning hole.

[0024] The upper end of the base is provided with an upwardly extending annular base sidewall; the base sidewall is provided with a sidewall groove, and the base is provided with an elastic arm in the sidewall groove, one side of which is connected to one side of the sidewall groove, and the elastic arm is provided with an outwardly protruding locking protrusion.

[0025] The lower end of the rotating cap is provided with a rotating cap sidewall; the inner side of the rotating cap sidewall is provided with evenly spaced positioning recesses; the rotating cap sidewall is fitted onto the outer side of the base sidewall, and the locking protrusion can be engaged in the corresponding positioning recess to position the rotating cap and the base.

[0026] This invention comprises a base, a rotating cap, a circuit board support, a circuit board, a light emitter, a light receiver, a digital tube support, and a light-transmitting mirror. The rotating cap is rotatably connected to the base. A cavity is recessed downwards on the upper surface of the rotating cap, and a grating disk is formed within this cavity. Multiple evenly spaced light-transmitting holes are arranged on the side of the grating disk. The circuit board support is supported within the cavity of the rotating cap and fixedly connected to the base. The circuit board is supported on the circuit board support. Multiple LEDs are arranged on the upper surface of the circuit board. The light emitter and light receiver are both fixed to the circuit board and located below it. The light emitter and light receiver are respectively located on opposite sides of the grating disk. Rotation of the rotating cap causes the grating disk to rotate. Light emitted by the light emitter passes through the light-transmitting holes, and the light receiver receives the light transmitted through the holes and sends a control signal accordingly. The digital tube support has multiple display holes facing the LEDs. The light-transmitting mirror is located on the upper surface of the digital tube support and fixedly connected to the circuit board support. This allows a grating disk to be formed on the rotating cap, and the circuit board support to be placed in the cavity of the rotating cap and fixedly connected to the base. The circuit board, digital tube support and light-transmitting mirror are arranged in sequence. The LED, light emitter and light receiver share a single circuit board. The overall structure is simple, compact, low in cost and easy to assemble. Attached Figure Description

[0027] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0028] Figure 1 This is a structural diagram of the compact grating hollow encoder of this utility model;

[0029] Figure 2 This is a structural diagram of the compact grating hollow encoder of this utility model from another perspective;

[0030] Figure 3 This is a cross-sectional view of the compact grating hollow encoder of this utility model;

[0031] Figure 4 This is an exploded view of the compact grating hollow encoder of this utility model;

[0032] Figure 5 This is an exploded view from another perspective of the compact grating hollow encoder of this utility model. Detailed Implementation

[0033] The specific embodiments of this utility model are further described below with reference to the accompanying drawings:

[0034] Please see also Figures 1 to 5This utility model features a compact grating hollow encoder comprising a base 1, a rotating cap 2, a circuit board support 3, a circuit board 4, a light emitter 5, a light receiver 6, a digital tube support 7, a light-transmitting mirror 8, a button 9, and a diffusion film 10. Wherein:

[0035] The base 1 mainly serves a supporting function.

[0036] The rotating cap 2 is rotatably connected to the base; the upper surface of the rotating cap 2 is recessed downward to form a receiving cavity 21, and a grating disk 22 is formed in the receiving cavity of the rotating cap, and a plurality of light-transmitting holes 23 are provided on the side of the grating disk at uniform intervals.

[0037] The circuit board bracket 3 is supported in the receiving cavity of the rotating cap and is fixedly connected to the base.

[0038] Circuit board 4 is supported on the circuit board bracket; multiple LEDs 41 are disposed on the upper surface of the circuit board. The LEDs are disposed on the circuit board in a surface mount manner.

[0039] The light emitter 5 is fixed to the circuit board and located below the circuit board.

[0040] A light receiver 6 is fixed to the circuit board and located below it; a light receiver 5 is positioned opposite the light emitter 6; the light emitter 5 and the light receiver 6 are respectively located on opposite sides of the grating disk; the rotating cap 2 rotates, causing the grating disk 22 to rotate, and the light emitted by the light emitter passes through the light-transmitting hole 23. The light receiver receives the light transmitted through the light-transmitting hole and sends a control signal accordingly. When the rotating cap is twisted, the grating disk rotates together relative to the circuit board support, the circuit board, the light emitter, and the light receiver, so that the light emitted by the light emitter can pass through the light-transmitting hole at intervals and be received by the light receiver, thereby outputting a corresponding signal. In this specific embodiment, the light emitter is an infrared light emitter, and the light receiver is an infrared light receiver.

[0041] A digital tube bracket 7 is supported on the upper end of the circuit board, and the digital tube bracket is provided with a plurality of display holes 71 facing the LEDs. The digital tube bracket is mainly used to cooperate with the LEDs for display. In this specific embodiment, the digital tube bracket 71 is also provided with button holes 72.

[0042] A light-transmitting mirror 8 is disposed on the upper surface of the digital tube bracket and fixedly connected to the circuit board bracket. The light-transmitting mirror can be a colored light-transmitting mirror, thereby preventing the digital tube bracket and LEDs from being directly seen from the outside.

[0043] Button 9 is inserted into the button hole and electrically connected to the circuit board. The button is mainly used to control the operation of the encoder; for example, the encoder starts working when the button is pressed.

[0044] A diffuser film 10 is disposed between the digital tube support and the light-transmitting lens. The diffuser film can soften the light emitted by the LED.

[0045] In this specific embodiment, the upper surface of the digital tube bracket 7 is provided with an upwardly protruding button portion 73, and the button hole is provided on the button portion and penetrates the button portion in the vertical direction.

[0046] The light-transmitting mirror 8 is provided with a light-transmitting mirror hole 81, which is fitted onto the outer surface of the button portion. The protruding button portion can serve as a positioning structure for the light-transmitting mirror.

[0047] In this specific embodiment, the rotating cap 2 has a central insertion hole 24, the circuit board support 3 has a downwardly extending insertion post 31, the insertion post 31 is inserted into the insertion hole 24, the base 1 has a base fixing hole 11, and the insertion post 31 has a support screw hole 311 that is directly opposite to the base fixing hole; the insertion post is supported on the base, and the screw passes through the base fixing hole and is threadedly connected to the support screw hole to fix the circuit board support on the base.

[0048] In this specific embodiment, the upper surface of the circuit board support 3 is recessed downward to form a support cavity 32, and the upper surface of the circuit board support 32 is provided with a fixed step 33 that is recessed downward. The circuit board and the digital tube support are disposed in the support cavity, and the light-transmitting lens is pasted and fixed on the fixed step, thereby fixing the circuit board and the digital tube support on the circuit board support.

[0049] In this specific embodiment, the circuit board 4 is provided with a circuit board positioning hole 42, the circuit board bracket 3 is provided with an upper positioning post 34, and the digital tube bracket 7 is provided with a bracket positioning hole 74. The upper positioning post is inserted into the circuit board positioning hole and the bracket positioning hole.

[0050] In this specific embodiment, the rotating cap 2 is provided with a support surface 25 in the accommodating cavity, and the rotating cap 2 is recessed in the support surface around the grating disk to form an annular accommodating groove 26; the grating disk is formed on the side wall of the insertion hole.

[0051] The circuit board support 3 includes a support bottom surface 35, which is located above the support surface. The support bottom surface 35 is provided with a light emitter hole 351 and a light receiver hole 352. The light emitter and the light receiver pass through the light emitter hole and the light receiver hole respectively and are inserted into the receiving groove and the socket respectively, or into the socket and the receiving groove respectively.

[0052] In this specific embodiment, the base 1 is further provided with a base positioning hole 12, a base wire passage hole 13, a base positioning post 14, and a base fixing part 15. The lower surface of the circuit board bracket 3 is provided with a lower positioning post 36, and the bottom surface 35 of the bracket is provided with a bracket wire passage hole 353, which communicates with the insertion hole 24 and the base wire passage hole 13. The lower positioning post 36 is inserted into the base positioning hole. The circuit board's connecting wires can extend through the bracket wire passage hole, the insertion hole, and the base wire passage hole, thereby facilitating the connection of the circuit board to external devices. The base positioning post is used for positioning the base when it is installed on other devices, and the base fixing part is used to fix the encoder to other devices. The base fixing part can be a screw hole or a threaded hole.

[0053] In this specific embodiment, the upper end of the base 1 is provided with an upwardly extending annular base sidewall 16; the base sidewall 16 is provided with a sidewall groove 161, and the base is provided with an elastic arm 162 in the sidewall groove, one side of which is connected to one side of the sidewall groove; the elastic arm 162 is provided with an outwardly protruding latching protrusion 163. In this specific embodiment, there are two sidewall grooves and two elastic arms, which are arranged opposite each other.

[0054] The lower end of the rotating cap 2 is provided with a rotating cap sidewall 27; the inner side of the rotating cap sidewall 27 is provided with evenly spaced positioning recesses 271; the rotating cap sidewall is fitted onto the outer side of the base sidewall, and the locking protrusion can engage with the corresponding positioning recess to position the rotating cap and the base. The elastic arm, locking protrusion, and positioning recesses enable positioning of the rotating cap during rotation, preventing disordered rotation and providing a better feel during twisting.

[0055] This invention comprises a base, a rotating cap, a circuit board support, a circuit board, a light emitter, a light receiver, a digital tube support, and a light-transmitting mirror. The rotating cap is rotatably connected to the base. A cavity is recessed downwards on the upper surface of the rotating cap, and a grating disk is formed within this cavity. Multiple evenly spaced light-transmitting holes are arranged on the side of the grating disk. The circuit board support is supported within the cavity of the rotating cap and fixedly connected to the base. The circuit board is supported on the circuit board support. Multiple LEDs are arranged on the upper surface of the circuit board. The light emitter and light receiver are both fixed to the circuit board and located below it. The light emitter and light receiver are respectively located on opposite sides of the grating disk. Rotation of the rotating cap causes the grating disk to rotate. Light emitted by the light emitter passes through the light-transmitting holes, and the light receiver receives the light transmitted through the holes and sends a control signal accordingly. The digital tube support has multiple display holes facing the LEDs. The light-transmitting mirror is located on the upper surface of the digital tube support and fixedly connected to the circuit board support. This allows a grating disk to be formed on the rotating cap, and the circuit board support to be placed in the cavity of the rotating cap and fixedly connected to the base. The circuit board, digital tube support and light-transmitting mirror are arranged in sequence. The LED, light emitter and light receiver share a single circuit board. The overall structure is simple, compact, low in cost and easy to assemble.

[0056] This utility model has the following features:

[0057] 1. Replacing the original digital tube with surface-mount LEDs is more cost-effective and flexible.

[0058] 2. The buttons, LEDs, light emitters, and light receivers share a single PCB circuit board, resulting in lower costs, higher integration, and easier modular production.

[0059] 3. The buttons are placed directly on the display screen, making them easier for users to understand.

[0060] 4. The entire encoder is fixed with a single screw, which reduces costs, makes assembly easier, and is more robust.

[0061] 5. The bottom support of the knob does not have a PCB installed; it can be directly fixed to the front cover using screws.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compact grating hollow encoder comprising a base, characterized in that: The compact grating hollow encoder also includes: A rotating cap is rotatably connected to the base; the upper surface of the rotating cap is recessed downward to form a receiving cavity, and a grating disk is formed in the receiving cavity of the rotating cap; a plurality of light-transmitting holes are provided on the side of the grating disk at uniform intervals. A circuit board support is provided, which is supported in the cavity of the rotating cap and fixedly connected to the base; A circuit board, which is supported on the circuit board bracket; the upper surface of the circuit board is provided with multiple LEDs; A light emitter, which is fixed to the circuit board and located below the circuit board; A light receiver is fixed on the circuit board and located below the circuit board; the light receiver is positioned opposite the light emitter; the light emitter and the light receiver are respectively located on opposite sides of the grating disk; the rotating cap rotates, causing the grating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted through the light-transmitting hole and sends a control signal accordingly; A digital tube bracket is provided on the upper end of the circuit board, and the digital tube bracket is provided with a plurality of display holes facing the LEDs; A light-transmitting mirror is disposed on the upper surface of the digital tube bracket and is fixedly connected to the circuit board bracket.

2. A compact grating hollow encoder according to claim 1, characterized in that: The digital tube bracket is also provided with button holes; the compact grating hollow encoder also includes: A button, which is inserted into the button hole and electrically connected to the circuit board.

3. A compact grating hollow encoder according to claim 2, characterized in that: The upper surface of the digital tube bracket is provided with an upwardly protruding button part, and the button hole is provided on the button part and penetrates the button part in the vertical direction; The light-transmitting mirror is provided with a light-transmitting mirror hole, which is fitted onto the outer surface of the button part.

4. A compact grating hollow encoder according to claim 3, characterized in that: The compact grating hollow encoder also includes: A diffusion film is disposed between the digital tube support and the light-transmitting lens.

5. The compact grating hollow encoder according to claim 1, characterized in that: The rotating cap has a central insertion hole, and the circuit board support has a downwardly extending insertion post that is inserted into the insertion hole. The base has a base fixing hole, and the insertion post has a support screw hole that is directly opposite the base fixing hole. The insertion post is supported on the base, and a screw passes through the base fixing hole and is threadedly connected to the support screw hole to fix the circuit board support to the base.

6. A compact grating hollow encoder according to claim 5, characterized in that: The upper surface of the circuit board bracket is recessed downward to form a bracket cavity. The upper surface of the circuit board bracket is provided with a fixed step that is recessed downward. The circuit board and the digital tube bracket are disposed in the bracket cavity, and the light-transmitting lens is attached and fixed to the fixed step.

7. A compact grating hollow encoder according to claim 6, characterized in that: The circuit board is provided with a circuit board positioning hole, the circuit board bracket is provided with an upper positioning post, and the digital tube bracket is provided with a bracket positioning hole. The upper positioning post is inserted into the circuit board positioning hole and the bracket positioning hole.

8. The compact grating hollow encoder according to claim 5, characterized in that: The rotating cap has a supporting surface in the receiving cavity, and the rotating cap has an annular receiving groove recessed downward around the grating disk on the supporting surface; the grating disk is formed on the side wall of the insertion hole; The circuit board support includes a support bottom surface, which is located above the support surface; the support bottom surface is provided with a light emitter hole and a light receiver hole, and the light emitter and light receiver pass through the light emitter hole and the light receiver hole respectively and are inserted into the receiving slot and the socket respectively, or are inserted into the socket and the receiving slot respectively.

9. The compact grating hollow encoder according to claim 8, characterized in that: The base is also provided with a base positioning hole, a base wire passage hole, a base positioning post and a base fixing part. The lower surface of the circuit board bracket is provided with a lower positioning post, and the bottom surface of the bracket is provided with a bracket wire passage hole. The bracket wire passage hole communicates with the insertion hole and the base wire passage hole. The lower positioning post is inserted into the base positioning hole.

10. The compact grating hollow encoder according to claim 1, characterized in that: The upper end of the base is provided with an upwardly extending annular base sidewall; the base sidewall is provided with a sidewall groove, and the base is provided with an elastic arm in the sidewall groove, one side of which is connected to one side of the sidewall groove, and the elastic arm is provided with an outwardly protruding locking protrusion. The lower end of the rotating cap is provided with a rotating cap sidewall; the inner side of the rotating cap sidewall is provided with evenly spaced positioning recesses; the rotating cap sidewall is fitted onto the outer side of the base sidewall, and the locking protrusion can be engaged in the corresponding positioning recess to position the rotating cap and the base.

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